Sylvania



2 Sheets-Sheet 1. OOMSTOOK;

(No Model.)

S. HAUO K 8: G. S;

MACHINE FEED MECHANISM.

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SAMUEL HAUOK AND GEORGE S. COMSTOOK, OF MECHANICSBURG, PENN- SYLVANIA;SAID HAUCK ASSIGNOR TO SAID OOMSTOOK.

MACHINE FEEDMECHANISM.

SPECIFICATION forming part of Letters Patent No. 507,496, dated October24:, 1893.

Application filed September 9, 1892. Serial No. 4 15,449- (No model.)

To all whom it may concern.-

Be it known that we, SAMUEL HAUOK and GEORGE S. OOMSTOOK, ofMechanicsburg, in the county of Cumberland and State of Pennsylvania,have invented certain new and useful Improvements in Machine FeedMechanism; and we do hereby declare the following to be a full, clear,and exact description of the invention, such as will enable othersskilled in the art to which it appertains to make and use the same.

Our invention relates to an improvement in machine feed mechanism, theobject of the invention being to provide simple and efticient meanswhereby to regulate the speed of the carriage or other part to be movedand also to regulate, by the same devices, the direction of travel ofsaid carriage or other part.

A further object is to provide mechanism for regulating the speed anddirection of movement of the carriage, said mechanism comprising a smallnumber of parts and being effectual in the performance of its functions.

With these objects in view the invention consists in certain novelfeatures of construction and combinations and arrangements of parts ashereinafter set forth and pointed out in the claims.

In the accompanying drawings, showing the application of the device to asaw mill carriage, Figure 1 is a sectional view illustrating ourimprovements. Fig. 2 is a plan view. Fig. 3 is an enlarged detail viewof the friction gearing. Fig. 4 is an end view of the machine. Fig. 5 isa separate view of the end bearing of the counter-shaft. Fig. 6 is aview of a modification of the friction gearing.

A represents the husk or framework, made of wood or other suitablematerial, and mounted on this husk or frame at or near its center, isthe main shaft 13, carrying at one end a saw 0 and at its other end, apulley C over which a band from any convenient source of power isadapted to run. A countershaft D is mounted in the frame A near one end,and carries a pulley D which pulley is connected with a pulley D on themain shaft B by means of a suitable strap. At one end of thecountershaft a friction disk E is secured, said suitable bearing a.

disk being made with a peripheral flange E, and at its center said diskis made with a depression E Mounted in the frame A at right angles tothe axis of the countershaft D, is a shaft F, at one end of which a hubF is mounted, said hub being connected with the shaft by means of aspline whereby the hub is caused to rotate with the shaft but permittedto have a sliding movement thereon. The hub F carries two frictionwheels G, G, the wheel G being preferably somewhat larger than the wheelG. The wheels G, G, are preferably made with paper peripheries adaptedto run on and receive motion from the disk E by frictional contacttherewith. In order to keep the disk E and wheels G, G, in properrelation to each other, we provide an end pressure, as shown in Fig. 5,where the end thrust is carried upon a ball or other In the form of endbearing shown in Fig. 5 the end of shaft D is supported in a sleeve D. Aplug D extends from the frame into the opposite end of the sleeve andinterposed between the ad jacentends of shaft D and plug D are disks (1,at, having balls at, a, between them. A spiral spring 0 in a socket b inplug D bears yieldingly against the outer disk. The plug D is forcedinward by means of a set screw 0, the latter bearing upon a Washer 0 Bymeans of this construction end wear upon the shaft or wear in thebearings may be easily compensated for, but of far greater importance isthe fact that the screw 'is employed for forcing the entire shaft Dendwise to compensate for the concavity in the disk E when wheel G isadjusted to different points radially thereof. At the end of the shaftF, opposite to that which carries the wheels G, G, a pinion His securedand adapted to mesh with a bevel gear H, carried by a shaft H whichlatter is mounted in the frame A and extends beyond the side thereof,where it is provided with a pinion H adapted to mesh with a rack bar orother gearing carried by a saw-mill carriage (not shown). Secured to theframe A .at the end thereof in which the shaft H is mounted, is abracket e. Pivotally connected at a point between its ends to thebracket 6, is a lever I, carrying a finger bar e andgrod e which latteris connected with a dog 6 ICO adapted to engage the notches of a segmente which latter is secured at its ends to the bracket 6. Pivotallyconnected to the lower end of the lever I, is a rod J adapted to extendto apoint in proximity to the hub F on the shaft F, where it is providedwith a yoke K, having pins fin the arms thereof, adapted to enter anannular groove in the periphery of the hub F. Now it will be seen thatwhen the wheel G shall have been moved to the center of the disk E, bymeans of the operating lever I, said wheel will be directly in line withthe depression E and the wheel G will not be in contact with theperipheral flange E of said disk. Consequently no mo tion will betransmitted from the friction disk E to the friction wheels G, G. By nowoperating the lever I to slide the hub and wheels carried thereby towardthe left in Figs. 1 and 8, the wheel G willbe made to engage the face ofthe friction disk E and reeeive motion therefrom, the speed beingregulated by the distance of said wheel G from the periphery of the diskE. Thus it will be seen that the carriage may be run at any degree ofspeed or it may be stopped entirely by moving the wheel G toward theright so as to bring its periphery opposite the recess E in the disk E.\Vhen the wheel G is in the center of the recess E the beveled wheel Gwill be in proximity to the peripheral flange E of the disk E and aslight movement farther toward the right will bring the wheel G intoengagement with the flange, without permitting the wheel G to move outof line with the recess or depression E The shaft F will now be made torotate in the reverse direction to that above described, and thecarriage will consequently be run back to the starting point. As thewheel G engages the disk E at its periphery, the rotation of the shaft Fwill be rapid, and consequently the backward or return movement of thecarriage will be correspondingly rapid.

Instead of providing the disk E with a reeess in the center, whereby thefeed mechanism may be stopped, the construction shown in Fig. 6 may beadopted, in which case the depression or recess in the disk has insertedtherein loose disks g and g running upon balls 9 or other bearing withsmall friction similar to the construction shown in Fig. 5 and describedin connection therewith.

The feed mechanism constructed as above set forth is very simple,comprises a small number of parts, and is effectual in the performanceof its functions, and it is applicable to saw mills, but also may beused with most any variety of machinery, such as iron lathes, planersand, in fact, any mechanism requiring a variable feed.

Having fully described our invention, what we claim as new, and desireto secure by Letters Patent, is-

1. In a machine feed mechanism, the combination with a pair of shafts,of a disk secured to the end of one shaft, said disk provided with africtional flange at the periphery and a slightly concave face encircledby said frictional flange, a pair of friction wheels connected togetherand capable of sliding back and forth, one wheel constructed and adaptedto engage the peripheral flange and the other the face of the diskbetween the center and flange and means for shifting the disk in thedirection of its axis, substantially as set forth.

2. The combination with a pair of shafts substantially at right anglesto each other, one having a friction disk secured on its end, said diskprovided with a slightly concave outer face and an inwardly incliningfrictional flange at the periphery, of a pair of friction wheelsconnected together and adapted to be slid on the other shaft, one ofsaid friction wheels adapted to engage the disk between its center andfrictional flange and the other having a beveled edge adapted to engagethe beveled face of the frictional flange and means for shifting thedisk in the direction of the axis, substantially as set forth.

8. In a machine feed mechanism, the combination with a revolublefriction disk and means for shifting the "latter in the direction of itsaxis, of a shaft, a hub carried by said shaft and adapted to rotatetherewith and have a sliding movement thereon, friction wheels, carriedby said hub and adapted to engage the friction disk and receive motiontherefrom, an operating lever, a rod connecting said operating lever andthe revoluble sliding hub whereby to change the positions of saidfriction wheels relatively to the fric tion disk to increase or decreasethe speed of the shaft, to stop the same or reverse the motion thereof,means for locking said oper ating lever and gearing for connecting saidshaft with part of machine to be moved, substantially as set forth.

l. The combination with aframe,and shaft, of an end thrust for the shaftconsisting of a sleeve in which an end of the shaft is supported, aslide bolt extending through a portion of the frame into the sleeve, anda screw located in the frame and adapted to turn therein and bear uponthe slide bolt, substantially as set forth.

5. The combination with a frame,and shaft, of a sleeve for the supportof an end of the shaft, disks located in the sleeve, balls between saiddisks, a slide bolt between which and the shaft the disks are placed,and a screw in the frame adapted to bear against the slide bolt,substanially as set forth.

In testimony whereof we have signed this specification in the presenceof two subscribing witnesses.

SAMUEL HAUCK. GEO. S. OOMSTOCK. Witnesses:

Ae-NEs Q. Bees, W. O. NEIDIG.

